Patents by Inventor Stephan Lutz

Stephan Lutz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190269294
    Abstract: A structural unit, in particular a heating pump for a water-conducting domestic appliance, in particular a domestic dishwasher, includes a heatable tube section through which a liquid can flow during operation and in which one or more mechanical structures are arranged that produce locally different flow speeds of the liquid. A first temperature measuring device is arranged on an outer side of the tube section radially outside a region of lower flow rate or less incident flow, and a second temperature measuring device is arranged on the outer side of the tube section radially outside a region of higher flow rate or more incident flow.
    Type: Application
    Filed: July 18, 2017
    Publication date: September 5, 2019
    Inventors: Markus Wecker, Stephan Lutz, Stephanie Karger
  • Publication number: 20190128284
    Abstract: A liquid heating pump includes an impeller chamber having an impeller, which can be rotatably driven, and a diffuser and/or pressure chamber arranged axially downstream in the flow direction and having a stationary diffuser. A heating device is associated with the diffuser and/or pressure chamber. The diffuser has a main body, in particular in the shape of a circular cylinder, having an axial outer casing, the diameter of which is selected to be at least equal to 80%, in particular between 80% and 90%, preferably approximately equal to 86%, of the external diameter of the diffuser and/or pressure chamber.
    Type: Application
    Filed: April 25, 2017
    Publication date: May 2, 2019
    Inventors: Igor HOFFMANN, Stephan LUTZ, Hans-Holger PERTERMANN, Markus WECKER
  • Publication number: 20190093671
    Abstract: A liquid heating pump includes an impeller chamber having an impeller, which can be rotatably driven, and a diffusor chamber and/or pressure chamber arranged axially downstream in the flow direction and having a stationary diffusor. A heating device is associated with the diffusor and/or pressure chamber. The diffusor has a main body, in particular in the shape of a circular cylinder. The main body has a front wall on which a guide blade portion is arranged which axially protrudes in a direction of the impeller into a liquid ejection region of the impeller arranged around an outer periphery of the impeller and which extends away from the liquid ejection region outwardly toward an axial outer casing of the main body, which axial outer casing is arranged radially further outwardly than the liquid ejection region of the impeller.
    Type: Application
    Filed: April 25, 2017
    Publication date: March 28, 2019
    Inventors: Igor Hoffmann, Stephan Lutz, Hans-Holger Pertermann, Markus Wecker
  • Patent number: 9997970
    Abstract: A pump has a DC pump drive motor with an electrically driven stator winding and a rotor which is mounted such that it can be driven in rotation in the field of the stator winding. The motor also has a motor shaft, a permanent-magnet ring and a holder which is mounted on the motor shaft and on which the permanent-magnet ring is held. The pump has a rotation-prevention device configured to secure the permanent-magnet ring against rotation about the axis of the rotor on the holder. A domestic appliance, in particular a dishwasher or a washing machine, is provided with a pump of this kind.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: June 12, 2018
    Assignee: BSH Hausgeraete GmbH
    Inventors: Martin Ivanak, Michal Kalavsky, Stephan Lutz, Hans-Holger Pertermann
  • Publication number: 20170311771
    Abstract: A dishwasher includes a wash container for cleaning dishes, glasses, flatware or similar items to be washed during a program sequence which includes a drying phase or another process phase. The wash container has an inlet opening for inflow of a volume flow of air. The volume flow of air entering the wash container through the inlet opening varies a number of times over the drying phase or the other process phase.
    Type: Application
    Filed: October 27, 2015
    Publication date: November 2, 2017
    Inventors: Stephan Lutz, Johannes Büsing, Markus Wecker
  • Publication number: 20170054334
    Abstract: An electric drive motor for a pump includes an electrically actuatable stator winding, and a rotor which is mounted for rotation in a field of the stator winding in the presence of an annular gap. The rotor includes a motor shaft, a magnet carrier disposed on the motor shaft, and at least one permanent magnet arranged on the magnet carrier. The magnet carrier is made from a ferromagnetic chrome steel.
    Type: Application
    Filed: February 5, 2015
    Publication date: February 23, 2017
    Inventors: Alfred Binder, Michal Kalavsky, Stephan Lutz, Hans-Holger Pertermann
  • Publication number: 20160149449
    Abstract: A pump has a DC pump drive motor with an electrically driven stator winding and a rotor which is mounted such that it can be driven in rotation in the field of the stator winding. The motor also has a motor shaft, a permanent-magnet ring and a holder which is mounted on the motor shaft and on which the permanent-magnet ring is held. The pump has a rotation-prevention device configured to secure the permanent-magnet ring against rotation about the axis of the rotor on the holder. A domestic appliance, in particular a dishwasher or a washing machine, is provided with a pump of this kind.
    Type: Application
    Filed: June 6, 2014
    Publication date: May 26, 2016
    Inventors: MARTIN IVANAK, MICHAL KALAVSKY, STEPHAN LUTZ, HANS-HOLGER PERTERMANN
  • Patent number: 8834644
    Abstract: A dishwasher and a method for operating a dishwasher having a washing receptacle; at least two spraying devices located within the washing receptacle; a reversing device; a drive in functional connection with the reversing device in order to bring the reversing device into different positions; and a circulation pump which, depending on a set position of the reversing device, conveys liquid to at least one of the at least two spraying devices. The method includes controlling the drive such that the reversing device assumes a predefined starting position; and controlling the drive such that, based on the predefined starting position, the reversing device assumes a specific position.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: September 16, 2014
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Bernd Heisele, Stephan Lutz, Michael Rosenbauer, Franz-Josef Wagner
  • Patent number: 8734136
    Abstract: A water-conducting household device, particularly a dishwasher, includes a pump having at least one normal operating mode in which fluid is pumped in a pumping direction, and a venting operating mode which can be carried out before the normal operating mode. The venting operating mode is provided to allow venting of the pump by pumping a gas bubble in opposition to the pumping direction during the normal operating mode at least partially out of a pump chamber of the pump to a fluid pump inlet of the pump.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: May 27, 2014
    Assignee: BSH Bosch und Siemens Hausergeraete GmbH
    Inventors: Bernd Kränzle, Stephan Lutz, Michael Georg Rosenbauer, Markus Wecker
  • Patent number: 8382492
    Abstract: A domestic appliance that includes at least one mains connection for the supply of power to the domestic appliance from a building supply mains. In an exemplary embodiment of the invention, the mains connection may include data transfer contacts.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: February 26, 2013
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Reinhard Hering, Stephan Lutz, Bruno Reiter, Michael Rosenbauer, Martin Stickel
  • Patent number: 8267723
    Abstract: A floor-mounted domestic appliance includes an A.C. power connector that supplies the appliance with electric energy, an appliance outlet that corresponds to the A.C. power connector, wherein the appliance outlet comprises a terminal block for establishing an electrically conducting connection to a power supply lead.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: September 18, 2012
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Reinhard Hering, Stephan Lutz, Bruno Reiter, Michael Rosenbauer, Martin Stickel
  • Publication number: 20120009074
    Abstract: A water-conducting household device, particularly a dishwasher, includes a pump having at least one normal operating mode in which fluid is pumped in a pumping direction, and a venting operating mode which can be carried out before the normal operating mode. The venting operating mode is provided to allow venting of the pump by pumping a gas bubble in opposition to the pumping direction during the normal operating mode at least partially out of a pump chamber of the pump to a fluid pump inlet of the pump.
    Type: Application
    Filed: March 16, 2010
    Publication date: January 12, 2012
    Applicant: BSH BOSCH UND SIEMENS HAUSGERÄTE GMBH
    Inventors: Bernd Kränzle, Stephan Lutz, Michael Georg Rosenbauer, Markus Wecker
  • Publication number: 20110120500
    Abstract: A dishwasher and a method for operating a dishwasher having a washing receptacle; at least two spraying devices located within the washing receptacle; a reversing device; a drive in functional connection with the reversing device in order to bring the reversing device into different positions; and a circulation pump which, depending on a set position of the reversing device, conveys liquid to at least one of the at least two spraying devices. The method includes controlling the drive such that the reversing device assumes a predefined starting position; and controlling the drive such that, based on the predefined starting position, the reversing device assumes a specific position.
    Type: Application
    Filed: August 25, 2008
    Publication date: May 26, 2011
    Applicant: BSH BOSCH UND SIEMENS HAUSGERÄTE GMBH
    Inventors: Bernd Heisele, Stephan Lutz, Michael Rosenbauer, Franz-Josef Wagner
  • Publication number: 20110088733
    Abstract: A water-bearing domestic appliance including a water diverter to distribute washing liquor. The water diverter has a carrier element that is a cast part in which lines for actuating the actuator are embedded. The water-bearing domestic appliance also includes an actuator that is fastened to the carrier element.
    Type: Application
    Filed: March 24, 2009
    Publication date: April 21, 2011
    Applicant: BSH BOSCH UND SIEMENS HAUSGERATE GMBH
    Inventors: Johannes Büsing, Stephan Lutz, Bruno Reiter, Michael Rosenbauer, Pedro Sancho
  • Publication number: 20100267268
    Abstract: A domestic appliance that includes at least one mains connection for the supply of power to the domestic appliance from a building supply mains. In an exemplary embodiment of the invention, the mains connection may include data transfer contacts.
    Type: Application
    Filed: October 29, 2008
    Publication date: October 21, 2010
    Applicant: BSH Bosch und Siemens Hausgerate GmbH
    Inventors: Reinhard Hering, Stephan Lutz, Bruno Reiter, Michael Rosenbauer, Martin Stickel
  • Publication number: 20090133928
    Abstract: A floor-mounted domestic appliance includes an A.C. power connector that supplies the appliance with electric energy, an appliance outlet that corresponds to the A.C. power connector, wherein the appliance outlet comprises a terminal block for establishing an electrically conducting connection to a power supply lead.
    Type: Application
    Filed: November 17, 2008
    Publication date: May 28, 2009
    Applicant: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Reinhard Hering, Stephan Lutz, Bruno Reiter, Michael Rosenbauer, Martin Stickel
  • Patent number: 6874352
    Abstract: A method for locating a fluid leak in a fuel cell stack is disclosed. The method comprises pressurizing a first fluid stream passage with a tracer fluid, introducing a flow fluid to a second fluid stream passage, maintaining a substantially constant flow of the flow fluid through the second fluid stream passage toward an exit point of the fuel cell stack, inserting a probe, adapted to monitor for the presence of the tracer fluid in the flow fluid, into the exit point, moving the probe through the second fluid stream passage and monitoring for the presence of the tracer fluid in the flow fluid at various locations of the second fluid stream passage. An apparatus for locating a fluid leak in a fuel cell stack is also provided.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: April 5, 2005
    Assignee: Ballard Power Systems Inc.
    Inventors: Zhaoyu Wang, Stephan Lutz, Karl D. Inglehart
  • Publication number: 20040209127
    Abstract: A method for locating a fluid leak in a fuel cell stack is disclosed. The method comprises pressurizing a first fluid stream passage with a tracer fluid, introducing a flow fluid to a second fluid stream passage, maintaining a substantially constant flow of the flow fluid through the second fluid stream passage toward an exit point of the fuel cell stack, inserting a probe, adapted to monitor for the presence of the tracer fluid in the flow fluid, into the exit point, moving the probe through the second fluid stream passage and monitoring for the presence of the tracer fluid in the flow fluid at various locations of the second fluid stream passage. An apparatus for locating a fluid leak in a fuel cell stack is also provided.
    Type: Application
    Filed: January 9, 2004
    Publication date: October 21, 2004
    Applicant: Ballard Power Systems Inc.
    Inventors: Zhaoyu Wang, Stephan Lutz, Karl D. Inglehart